# Math

1. math
put 28 meters 2 meters 4 meters 8 meters and 7 meters from highest to lowest
2. math;)
Show that sin(x+pi)=-sinx. So far, I used the sum formula for sin which is sin(a+b)=sin a cos b+cos a sin b. sin(x+pi)=sin x cos pi+cos x sin pi I think I am supposed to do this next, but I am not sure. sin(x+pi)=sin x cos x+sin pi cos pi If that is right then I am not sure ...
3. math;)
What is a simplified form of the expression (sec^3 theta) - (sec theta/cot^2 theta)? a. 0 b. sec theta-tan theta c. cos theta d. sec theta***** Every time I attempt to work out this problem I end up with one. I know the answer is sec theta, but I do not know how to get there. ...
4. Math
if you spin the spinner below twice, what is P(vowel, then Q)? There is a spinner with 6 spaces, 3 being vowels. A.1/10 B.1/9 C.2/9 D.1/12 At first i thought it was D but now i don't know.
5. Math
10. Bicycle speedometers are programmed based on the number of revolutions the wheel turns per second. A bike wheel spins 480 times in 1 minute. What is the rate per second? a. 1 revolution per second b. 8 revolutions per second c. 60 revolutions per second d. 480 revolutions ...
6. Math
What is a simplified form of the expression [sec^2x-1]/[(sinx)(secx)]? a. cot x b. csc x c. tan x***** d. sec x tan x I think this is the correct answer, but I do not understand why. Can someone please explain?
7. Math
A balloon is inflated by gas and the volume is given by the formula 4/3 πr^3 cm^3 how fast is the balloon inflated when it reaches 5 seconds?
8. Math
The shopkeeper has 75 3/4 kg of sugar and sold 1/4 of it, find the amount of sugar sold.
9. Math
A doctor orders a dosage of 5 ml of medicine every 4 hours for 8 days how many fluid ounces of medicine should be purchased Help sole
10. Math
Kevin mowed 6 lawns in 8 hours. What was his rate of mowing in hours per lawn?
11. Math
The students in Mrs. Garcia's class will sell magazine subscriptions to raise money for the new playground equipment. The statistics from the magazine company show that one out of every 5 people asked will buy a subscription. Based on the company's statistics if Marcia asks ...
12. Math
Find the consumer surplus at the equilibrium point.(I keep using the formula listed below but get a completely different answer from what the book says. I am a visual person so please show me step by step so I can see where I went wrong. D(x)=(x-6)^2 ; x=3 Formula: D(x)-QP The...
13. Math
In the expression shown, w represents a rational number. 5w What value of w makes the expression equal a number less than 5? A. 3/4 <<<< B. 1 1/6 C. 5/5 D. 5/4
14. math
Solve- 4x^2-9x+3=0 What is the smaller answer? Answer -1000 if there is no real value of x that solves this equation Answer must be +,- 1.0%
15. Math - AP Calculus
The rate at which water flows into a tank, in gallons per hour, is given by a differentiable, increasing function R of time t. The table below gives the rate as measured at various times in an 8-hour time period. t (hours) 0 2 3 7 8 R(t) (gallons per hour) 1.95 2.5 2.8 4 4.26 ...
16. math
Determine whether each statement is true or false. A chord that contains the center of the sphere is a diameter of the sphere. A tangent of a sphere is a line that intersects a sphere in exactly two points.
17. math;)
The equation 2sinx+sqrt(3)cotx=sinx is partially solved below. 2sinx+sqrt(3)cotx=sinx sinx(2sinx+sqrt(3)cotx)=sinx(sinx) 2sin^2x+sqrt(3)cosx=sin^2x sin^2x+sqrt(3)cosx=0 Which of the following steps could be included in the completed solution? a. cos^2x-sqrt(3)cosx-1=0 b. sin^...
The rate of bacteria growth in a laboratory experiment was measured at 11% per hour. If this experiment is repeated and begins with 6 grams of bacteria, how much bacteria should be expected after 15 hours? Round to the nearest tenth of a gram.
19. Math
Which expression shows how many 3/8 pound hamburger patties can be made from 4 1/3 pounds of ground beef? A. 4 1/3 x 3/8 B. 4 1/3 divided by 3/8 <<<< C. 3/8 x 3/1 D. 3/8 divided by 13/3
20. math
The circle above has an area of 36 in2. What is the area of the yellow sector? Use 3.14 for .
21. math help
can you help me solve the equation 3x - 3 = -18?? PLZ HELP MEEEE
22. Math
Calculate the area of the composite figure, which is not drawn to scale. 17cm 10cm 22cm 17cm 19cm.! I have an answer but I was told by my teacher it was wrong, If anyone could give me the steps to solving it I'll be perfectly happy! :-) thank you
23. Math
You have 3/4 cup of salsa for making burritos. Each burrito requires 1/8 cup of salsa. How many burritos can you make? A. 6 <<< B. 8 C. 10 D. 12 Am I correct? Please help!!
24. Math
Scott spent \$6.24 on pet food. The food costs \$0.24 per cup. How many cups of food did he buy? A. 2.6 B. 0.26 <<< C. 26 D. 260
25. math
calculate the value of a,a and c in d ABC given that b=17.23cm,c=10.86cm and b=101.3
26. math
As part of their job, meteorologists make weather predictions from data. How accurate are their predictions? What are other scenarios in which you would use data to make a prediction? How would you defend your prediction using data?
27. Math
a bag contains 7 green marbles, 9 red marbles, 10 orange marbles, 5 brown marbles, and 10 blue marbles. you choose a marble, replace it and choose again. what is P(red, then blue)? A. 77/164 B. 19/41 C. 90/1681 D. 45/41 Im kinda confused but i think its B
28. Math
A number cube is rolled 150 times. The number 3 comes up 43 times. What is the experimental probability of rolling a 3? What is the theoretical probability of rolling a 3? A. 43/150;1/6 B. 43/150;1/50 C. 1/6;43/150 D. 3/43;1/6 I think it's A?
29. Math
In an A.P. the third term is 4 times the 1st term
30. Math
The average middle-distance runner at a local high school runs the mile in 4.5 minutes, with astandard deviation of 0.3 minute. What is the probability that a runner will run the mile in less than 4 minutes? Possible Answers: A)7%B)3%C)5%D)4% How do I plug this into my TI-83 ...
31. Math
Let R denote the region in the first quadrant bounded above by the line y 1 and below by the curve y -3, 0 3 x < 1. Find the centroid of the region R. You may use your calculator to evaluate any definite integrals invol ved.
32. 7th math
Find the surface area of this triangular prism 24 in 25 in 14 in 32 in and 25 in
33. Math
Uranus is approximately 2.74 x 10^9 km away from the Sun at perihelion and 3.00 x 10^9 km at aphelion. Find the eccentricity of Uranus's orbit given that the perihelion is r = a(1 - e) and the aphelion is r = a(1 + e).
34. Math
How would you prepare 500 mL of 5% dextrose added to water from a 50% stock solution? _________ mL 50% dextrose + ________mL water
35. Math
f the life, in months, of a certain type of car battery is normally distributed with a mean of 88months and a standard deviation of 9 months, what should be the guarantee period if the companywants less than 5% of the batteries to fail while under warranty? Answers: A)Less ...
36. Math
The average middle-distance runner at a local high school runs the mile in 4.5 minutes, with astandard deviation of 0.3 minute. What is the probability that a runner will run the mile in less than 4 minutes? Possible Answers: A)7%B)3%C)5%D)4% I know it's C, but I don't know ...
37. Math
The average middle-distance runner at a local high school runs the mile in 4.5 minutes, with astandard deviation of 0.3 minute. What is the probability that a runner will run the mile in less than 4 minutes? Possible Answers: A)7%B)3%C)5%D)4% I know it's C, but I don't know ...
38. Math
One angle of an isosceles triangle measures 80 degrees. Witch other angles could be in that isosceles triangle?
39. MATH
A collar of Styrofoam is made to insulate a pipe. Find its volume The large radius is to the outer rim. The small radius r is to the edge of the insulation. Use π for 3.14. r = 3 in R = 5 in h = 18 in. Round 2 decimal places
40. math
A drama club is planning a bus trip to New York City to see a Broadway play. The cost per person for the bus rental varies inversely as the number of people going on the trip. It will cost \$30 per person if 55 people go on the trip. How much will it cost per person if 60 ...
41. Math
A sheet of plywood is 4 feet wide by 8 feet long. What is the minimum number of sheets of plywood needed to cover the frame? Justify your answer. Frame : 24 feet by 8 feet. 3?
42. Math
each letter on the english alphabet is written on a scrap of paper and put in a hat P(j) = 1/26 what type of probability is illustrated and why? Can anyone help me with this?? I think it would be experimental but I'm not completely sure why.
43. math
Which numerical expression correctly translates the phrases 4 less than the sum of 9 and 2 ? 9 + 2-4, 9-4+2, 4- ( 9+ 2 ) , 4- 9 + 2 the correct answer I chose is 4-(9 +2) is that right. Thank you
44. Math
8 more than the product of 2 and 3 does not represent the statement ( 8 + 2) x 3 is that true
45. Math
Whats 7*0 0 7 2************** 1 I have dyslexia so please don't assume I'm being dumb, please. I'm in 5th grade. My best friend helped me spell everything too. So please help me. I got this from special ed.
1.y + 3 >_ 5 ???How do I solve this 2. Write an inequality to represent the information: The temperature stayed above 15°F I think it is: t < 15 but I am sooo not sure 3. Gabriella went skiing. She paid \$35 to rent skis and \$15 an hour to to ski, if she paid a total of...
47. math
Two sides of an obtuse triangle have lengths 7 and 3. If the third side is also an integer, what are its possible lengths?
48. math
what is the largest possible remainder when a 2-digit number is divided by the sum of its digits?
49. math
Triangle ABC undergoes a series of transformations to result in triangle DEF. Is triangle DEF congruent to triangle ABC ? Is it Congruent or Not congruent? 1.)) Triangle ABC is translated 3 units up and 5 units right, and then dilated by a scale factor of 4 to form triangle ...
50. math
A HOSPITAL(H) IS 7KM EAST AND 5KM NORTH OF A SCHOOL(S). CALCULATE THE BEARING OF H FROM S
51. Math
kelly bought 2 kilograms of rice and half kilograms of meat from the supermarket. The cost of 5 kilograms of rice was \$13. She spent \$9.80 in all. How much did 1 kilogram of meat cost?
52. Math
1.what is the slope of the line in the graph show below this is Algebra 1 a unit 6 lesson 3
53. Math
The figure below shows a shaded circular region inside a larger circle: A shaded circle is shown inside another larger circle. The radius of the smaller circle is labeled as r and the radius of the larger circle is labeled as R. On the right side of the image is written r ...
54. math;) Law of Cosines
Two satellites are in Earth's orbit and are 424 km apart. If an observer is 658 km away from satellite A and 471 km away from satellite B, what angle must the observer turn his telescope to change his view from one satellite to another? a. 40.0 degrees b. 45.5 degrees c. 50.0 ...
55. Math
How could you create a rotation of the original images? How could you create a translation (slide) of the original images?
56. math;) Law of Cosines
The obscure triangle has side lengths of 16 in, 13 in, and 20 in. I am assuming side a is 13, side b is 16, and side c is 20. We are looking for angle x between side a and side b. I have tried to use the formula for cos(C) because angle C is supposed to be between side b and ...
57. Math
|Color | red | blue| green| yellow| | |__________________________________ | | # of times spun|20| 10| 9| 11| | |___________________________________| (A messy version of the table above) The table shows the results of spinning a four-colored spinner 50 times. Find the ...
58. Algebra
1. Nine students ask to visit a college admissions counselor. Each scheduled visit includes one student. In how many ways can they be scheduled? **They can be arranged in 45,360 different ways.** 2. Evaluate 8P2 Using the permutation formula, **The answer is 8P2 = 56** 3. A ...
59. math
There are 3 different numbers.The sum of the number is 19.The greatest number is equal to the product of the other two numbers.what is the smallest number
60. Math
at what interest rate would a deposit of \$20000 grow to \$29836 in 25 years with continuous compounding?
61. MAth
how long will it take for the investment to double at an interest rate 1.7% if the interest is compunded quarterly?hint : you my assume that \$100 were invested
62. math:) Law of Sines
A 6 ft. person is leaning against a pole. The person makes a 35 degree angle with the pole. He also makes a 50 degree angle with the ground. How tall is the pole? I am confused how to do this. Any help is greatly appreciated!
1. Find the volume of a square pyramid with a base length of 9 cm and a height of 4 cm A.324 cm^3 B.108 cm^3 C.36 cm^3 D.152 cm^3** 2. Find the volume of the given cone. It has a radius of 6 in. And a height of 11 in. A. 320 in^3 B.1,224 in^3 C.415 in^3** D.622 in^3 3. Find ...
64. Math
If you toss 2 dice a1,000 times, how many of those would you expect to equal 7?
65. math
A charity raffle offers a first prize of \$1,000,000, a second place prize of \$100,000 and a third place prize of \$10,000. A total of 500 000 tickets will be sold. What price should be charged for a ticket in order for the charity to make a 60% profit on this raffle?
66. Math
The running shoes Gina bought at a 20%-off sale were originally priced at \$70. Before tax was added, how much money did Gina save by buying the shoes on sale?
67. math
circle O has a diameter D and circle P has a diameter d. the two circles are externally tangent. find the length of the common external tangent in terms of the circles' diameters
68. math
consider the graph of the equation xy=9. rotate the graph 45 degrees clockwise about the center (0,0). what is the equation of the rotated graph?
69. Math
Hi, Can someone please help me on this question. From midnight to 6:00 am, the temperture rose 8 degrees C. at 6:00 am the temperature was -20 degrees C. what was the temperature at midnight? Thanks :)
70. Math
What is 48,567kilo in metric tons? Im in 4th grade no judge
71. math
A charity raffle offers a first prize of \$1,000,000, a second place prize of \$100,000 and a third place prize of \$10,000. A total of 500 000 tickets will be sold. What price should be charged for a ticket in order for the charity to make a 60% profit on this raffle?
72. Math
A charity raffle offers a first prize of \$1,000,000, a second place prize of \$100,000 and a third place prize of \$10,000. A total of 500 000 tickets will be sold. What price should be charged for a ticket in order for the charity to make a 60% profit on this raffle?
73. Math
In its Flip Your Lid contest, a coffee chain offers prizes of 50 000 free coffees, each worth \$1.50; two new TVs, each worth \$1200; a snowmobile worth \$15 000; and a sports car worth \$35 000. A total of 1 000 000 promotional coffee cups have been printed for this contest. ...
74. math
a rental car company charges a fixed fee of 30\$ plus \$0.05 per mile. let c represent the total cost of renting a car and driving it m miles. Write a equation that could be used to find the total cost of renting a car and driving it any number of miles.
75. Math
How could you create a rotation of the original images? How could you create a translation (slide) of the original images?
76. Math
Does an 8-car Ferris wheel have rotational symmetry? Explain I need help asap
77. Math
78. Math
I am currently doing a question in which the equation is dN1/dt= -N1 + 0.1N1*N2 However, I am able to follow until the step of -N1(1 - 0.1N2) after that I'm not able to follow to the step of (-1)N1 (1-N2/10) Can someone please explain to me how we went from the second step to ...
79. math
The formula for the lateral surface area of a cone is A=πr√(h^2+r^2). (A)Solve for r and simplify the result, if possible. (B) If the lateral surface area of a cone is 10 square feet and the height is 16 inches, what is the radius of the cone in inches? Round your answer to...
80. Math
Each letter of the English alphabet is written on a scrap piece of paper and put in a hat. P(j) What type of probability is Illustrated and why.
81. math
Think about it ... Julie says that a rotation of 180° around the origin is the same as the reflection in the x-axis followed by a reflection in the y-axis. Is Julie correct? Justify your answer and be sure to include a diagram. I just wanna know does Julie correct or not. And...
82. Math
Dale is making a smoothie. The recipe calls for one kind of fruit and one kind of juice. There are seven kinds of fruit in two kinds of juice to choose from how many different smoothies can Dale? make
83. math
carlos makes geometrical artworks out of sheet metal. the dimensions of a full size sculpture will be 6 times the dimensions of the model shown below. He will not use any metal for the bottom base of the cylinder. How many square feet of sheet metal will carlos use for the ...
84. Math
Musa paid sh 180 for a shirt after getting à discount of 10%.the shopkeeper made a profit of 20% on the sales of this shirt.what % profit would the shopkeeper have made if no discount was made??
85. math
graphing in the coordinate plane unit test 3. which ordered pair is not a solution of y= -12x - 3 a.(-3,33) ***** b.(8,-98) c.(-9,105) d.(3,-39) 4.not posted 5. find the three solutions of the equation y = 7x - 5 a.(3,-26),(-1,-12),(3,16) b.(-3,-26),(-12,-1),(16,3) c.(-3,-26...
86. Math
Rational numbers are fractions and their opposites. All of these numbers are rational numbers. Show that they are rational by writing them in the form a/b or -a/b. 0.2-1/5 -√4 0.333-333/1000 √100 -1.000001 √1/9 All rational numbers have decimal representations, too. Find...
87. Math
Rakesh was fixing a jigsaw puzzle
88. Math
At the veterinarians office, Terri learnee that her dog weighed 4 times as much as her cat. Together the pets weighed 40 lbs. How much did the dog weigh?
89. Math
ak=(2^(2k)k!)/k^k In this problem use the Ratio Test to decide whether the series converges. which is not the series is divergent. Compute L=lim|av(n+1)/(avn)|and find the numerical value of the limit L n->infinity "v" means down
90. Math
A stained glass window has an area of 900 square inches. A. Once a window design is made of rectangular pieces that are 5 inches by 3 inches. How many stained glass pieces are used in the window? B. Another window design is made of square stained glass pieces that are 6 inches...
91. Math
The dimensions of a box are 10 in by 15 by 20. Each edge of the box will be fastened with tape. How many inches of tape are needed? Use make a drawing strategy
92. math
Mr. Ismail invested sh. 36,000 in the bank which gives an interest of 20% per year. After how long will he get sh. 43,200? #please people help me this question how to arrive to final answer. Also i need to know if sh. 43,200 is either the total amount of money (P+I) or the ...
93. Math
Using the systematic list, solve. Dead eye, Joe made 15 points in the basketball game. 3 points given for a long shot, 2 points given for a field goal, and 1 point is given for a free throw. How many ways can dead eye Joe score 15 points. I came up with 11. But I think I am ...
94. Math
When might it be more useful to use a graph rather than a function rule? A function rule rather than a graph?
95. math
The formula for the surface area of a cylinder is A=2πr^2+2πrh. (A)Solve for r and simplify the result, if possible. (B) If the surface area of a cylinder is 100 square feet and the height is 40 inches, what is the radius of the cylinder in units of feet? Round your answer ...
96. math
Mr. Ismail invested sh. 36,000 in the bank which gives an interest of 20% per year. After how long will he get sh. 43,200? #please people help me this question how to arrive to final answer. Also i need to know if sh. 43,200 is either the total amount of money (P+I) or the ...
97. math
The projected number N of Wi-Fi enabled cell phones (in millions) in the U.S. can be modeled by the function N=-0.4x^2+21x+35, where x is the number of years since 2009. If the trend continues, find the year in which the projected number of Wi-Fi enabled cell phones will first...
98. math
Find the missing value so that the two points have a slope of -11/7. (2,6) and (x,-5)
99. Math
Complete the table Yards is blank Feet= 29 Inches= 348 Help find yards Help solve
100. Math
Kelly likes red marbles. Each of her 12 bags of marbles has 2/7 red marbles. How many separate bags of red marbles can she make? How to I work out this problem? Im not sure how to set it up, thanks!